All proceedings had and all elections held in any sanitary district of the Commonwealth prior to January 1, 1946, to provide for and with respect to the contracting of bonded indebtedness and the authorization, issuance, sale, execution and delivery of bonds by or on behalf of such district are validated and confirmed, notwithstanding any lack of power of the governing body of the county in which such district is located to authorize and issue such bonds, or to execute, sell or deliver the same, and notwithstanding any defects or irregularities in such proceedings or elections, or in such execution, sale or delivery; and such bonds so issued or to be issued are and shall be valid and enforceable obligations of such sanitary district.